Interesting and I assume that it was somewhat less in JD8u ?
Off the top of my head that is one thing that didn't change in any big
way since JDK 8u.
Perhaps something has changed so that it is now [considered] needed
whereas before
it was not? So did it go from zero percent to 29% or from 10% to 29% ?
But even that doesn't on it own account for everything.
29% of 8 seconds would be about 2.5 seconds and doesn't explain going from
< 3 seconds to 8 seconds .. we are still missing at least 2.5 seconds ..
-phil.
On 9/26/18, 11:08 AM, Daniel Persson wrote:
Hi Phil
What the PDFBox team told me it could have something to do with color
mapping.
And my quick profiling shows that the code spends 29% of the time
inside of java.awt.image.ColorConvertOp.filter on java 11
But I'll open a issue.
Best regards
Daniel
On Wed, Sep 26, 2018, 19:33 Phil Race <philip.r...@oracle.com
<mailto:philip.r...@oracle.com>> wrote:
Multiple pieces are changing across these releases.
Is it the JPEG writing ? Is it freetype vs t2k (font performance)
is it harfbuzz vs icu (text layout), is it marlin vs ductus
(rasterization) ?
So it is very hard to say with any certainty what the cause of the
difference is .. or
why 10 got so much better than 9 .. even if still not back to JDK 8.
Please file a bug at java.com <http://java.com>.
-phil.
On 09/25/2018 10:42 PM, Daniel Persson wrote:
> Hi everyone,
>
> We render a lot of images with PDFBox with Java 1.8.0 and we
want to
> upgrade to the current OpenJDK 11 but sadly we see some performance
> degradation switching over to OpenJDK. Anyone have a suggestion to
> remedy this issue, or can explain why it is slower?
>
> Using the PDFBox app current release downloadable from
> http://www-us.apache.org/dist/pdfbox/2.0.11/pdfbox-app-2.0.11.jar
>
> Running the command
> java -jar pdfbox-app-2.0.11.jar PDFToImage -time test.pdf
>
> We see the following result
>
> ---------------------------------------------------------
> java version "1.8.0_181"
> Java(TM) SE Runtime Environment (build 1.8.0_181-b13)
> Java HotSpot(TM) 64-Bit Server VM (build 25.181-b13, mixed mode)
> Rendered 1 page in 2762ms
> ---------------------------------------------------------
> openjdk version "9.0.4"
> OpenJDK Runtime Environment (build 9.0.4+11)
> OpenJDK 64-Bit Server VM (build 9.0.4+11, mixed mode)
> Rendered 1 page in 8034ms
> ---------------------------------------------------------
> openjdk version "10.0.2" 2018-07-17
> OpenJDK Runtime Environment 18.3 (build 10.0.2+13)
> OpenJDK 64-Bit Server VM 18.3 (build 10.0.2+13, mixed mode)
> Rendered 1 page in 4255ms
> ---------------------------------------------------------
> openjdk version "11" 2018-09-25
> OpenJDK Runtime Environment 18.9 (build 11+28)
> OpenJDK 64-Bit Server VM 18.9 (build 11+28, mixed mode)
> Rendered 1 page in 4275ms
> ---------------------------------------------------------
> openjdk version "12-ea" 2019-03-19
> OpenJDK Runtime Environment 19.3 (build 12-ea+11)
> OpenJDK 64-Bit Server VM 19.3 (build 12-ea+11, mixed mode)
> Rendered 1 page in 4399ms
>
> The pdf file used in this example can be downloaded from
>
https://drive.google.com/file/d/139wP6PDmmQ6KBTyeJTETIrplSuOUgFfG/view?usp=sharing
>
> Best regards
> Daniel
